The French horn is a brass instrument made of more than 20 feet (6.1 m) of tubing wrapped into a coil with a flared bell. The main bugle on an F Horn is ~12-13' and the tubing associated with the valves make up the additional tubing to achieve ~20' of tubing overall. A musician who plays the horn is called a horn player (or less frequently, a hornist). In informal use, "horn" may also refer to nearly any wind instrument with a flared exit for the sound.